例句：
He beckoned a second body guard,lou .
他招手把另一姓罗的保镖叫过来。
A typical run-up time is about 20seconds.
典型起转时间是20秒左右。
The second stage is the metaphysical stage .
第二阶段是形而上学阶段。
This could not be borne many seconds.
这种状况只持续了短短的几秒钟。
A second old lady got out of a chair .
第二个老妇人从椅子上站了起来。